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ER605 WAN DHCP lease time

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ER605 WAN DHCP lease time

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ER605 WAN DHCP lease time
ER605 WAN DHCP lease time
2024-01-02 11:28:29 - last edited 2024-01-04 11:42:55
Tags: #WAN Setup #DHCP Service
Model: ER605 (TL-R605)  
Hardware Version: V2
Firmware Version: 2.2.3

I use the ER605 to connect to my internet provider Telia via fiber and Dynamic IP. My log is alwas full (999+) as the router updates WAN IP every 10 minute!

 

"WAN: DHCP client lease expired. Began renewing the lease."

 

My internet provider says I have the same IP all the time and there must be something in my router. As I understand the WAN IP lease time is nothing I can do about on my (ER605) side, or?

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#1
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1 Accepted Solution
Re:ER605 WAN DHCP lease time-Solution
2024-01-04 01:26:50 - last edited 2024-01-04 11:42:55

Borje_Lerum wrote

Hi Clive_A, I have tried but not found any settings regarding Logs. Can you explain, please? Regards Borje

  @Borje_Lerum 

 

Tjenare!

 

Go to Logs, then Notifications, then the tab Devices, scroll down to the two DHCP lines:

 

 

Unchecking all boxes prevents the DHCP messages being logged at all. If I remeber correctly, only Event is checked by default. Unless I am mistaken, the Client is when your ER605 is the client, eg when it gets the IP from Telia. The Server is when your ER605 hands out DHCP addresses to your devices on your local network.

 

I unchecked both since I prefer short lease times and have quite a few devices. Lycka till!

 

/HN

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#5
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Re:ER605 WAN DHCP lease time
2024-01-02 12:14:41 - last edited 2024-01-02 12:15:04

  @Borje_Lerum 

 

there's a similar thread about DHCP logs here https://community.tp-link.com/en/business/forum/topic/648832?replyId=1299798&utm_source=Subscription&utm_medium=email

From a quick search , it seems that Telia have a DHCP lease time of 20 mins which would explain why the router is renewing at 10 mins.

 

My internet provider says I have the same IP all the time and there must be something in my router.

 

They (your ISP) may allocate the same IP all the time but they are only giving a 20 min lease each time!.

 

As I understand the WAN IP lease time is nothing I can do about on my (ER605) side,

 

Correct.

 

Seems its possible that a recent change in the router firmware may have started to log DHCP renewals where it didnt before...

 

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#2
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Re:ER605 WAN DHCP lease time
2024-01-03 02:31:56

Hi @Borje_Lerum 

Thanks for posting in our business forum.

As said above, the log now records DHCP-related entries. You can disable it in the log settings.

Best Regards! If you are new to the forum, please read: Howto - A Guide to Use Forum Effectively. Read Before You Post. Look for a model? Search your model NOW Official and Beta firmware. NEW features! Subscribe for the latest update! ☛Download Beta Here☚ ☛ ★ Configuration Guide ★ ☚ ☛ ★ Knowledge Base ★ ☚ ☛ ★ Troubleshooting ★ ☚ ● Be kind and nice. ● Stay on the topic. ● Post details. ● Search first. ● Please don't take it for granted. ● No email confidentiality should be violated. ● S/N, MAC, and your true public IP should be mosaiced.
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#3
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Re:ER605 WAN DHCP lease time
2024-01-03 09:51:25
Hi Clive_A, I have tried but not found any settings regarding Logs. Can you explain, please? Regards Borje
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#4
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Re:ER605 WAN DHCP lease time-Solution
2024-01-04 01:26:50 - last edited 2024-01-04 11:42:55

Borje_Lerum wrote

Hi Clive_A, I have tried but not found any settings regarding Logs. Can you explain, please? Regards Borje

  @Borje_Lerum 

 

Tjenare!

 

Go to Logs, then Notifications, then the tab Devices, scroll down to the two DHCP lines:

 

 

Unchecking all boxes prevents the DHCP messages being logged at all. If I remeber correctly, only Event is checked by default. Unless I am mistaken, the Client is when your ER605 is the client, eg when it gets the IP from Telia. The Server is when your ER605 hands out DHCP addresses to your devices on your local network.

 

I unchecked both since I prefer short lease times and have quite a few devices. Lycka till!

 

/HN

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#5
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Re:ER605 WAN DHCP lease time
2024-01-04 08:49:51

  @Haga_Nova are those settings available in Standalone mode though ?

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#6
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Re:ER605 WAN DHCP lease time
2024-01-04 21:29:29

My ER605v2  started doing the same.

 

I only checked because I was having connectivity issues that may or may not be related.   My connectivity issues are resolved for the main part but still some sites I can't get to, but able to ping.

 

I started getting the message every 5 mins.   For me it started on the 29th Dec according to the logs, which i checked only after I upgraded the firmware to the latest.  The upgrade wast done on 3rd Jan 2024.  

 

 

WAN: DHCP client renewing IP succeeded. (IP-Address=x.x.x.x, Mask=255.255.254.0, Gateway=x.x.x.x)
Jan 04, 2024 10:07:50   pm
WAN: DHCP client lease expired. Began renewing the lease.

Jan 04, 2024 10:07:46  pm
   
   
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#7
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Re:ER605 WAN DHCP lease time
2024-01-04 22:16:51
In order to have only relevant things in the log I un-ticked these two items according to Haga_Nova, and now it stopped.
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#8
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Re:ER605 WAN DHCP lease time
2024-01-04 22:25:27
I get that, the question is why did they start recently? Not saying it's an issue, but why did it start happening, and in my case, it coincided with my connectivity issues. I can hide the notifications, but will that solve my problems if it's related.
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Re:ER605 WAN DHCP lease time
2024-05-05 17:06:58

My log is full with same notice about renew lease of WAN  IP.  Both my systems are using Starlink for ISP. One system with Starlink modem in Bridge mode gets public WAN IP renewed under 3 minutes!  Another system with S|tarlink modem in loop renews 192.168.1.X every 30 minutes.  I disabled recording the event tracking. (Un fixed)

 

Borje_Lerum wrote

I use the ER605 to connect to my internet provider Telia via fiber and Dynamic IP. My log is alwas full (999+) as the router updates WAN IP every 10 minute!

 

"WAN: DHCP client lease expired. Began renewing the lease."

 

My internet provider says I have the same IP all the time and there must be something in my router. As I understand the WAN IP lease time is nothing I can do about on my (ER605) side, or?

 

 

@Borje_Lerum 

Cam
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#10
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Re:ER605 WAN DHCP lease time
2024-05-06 12:33:20

Hi  @CamT 

CamT wrote

My log is full with same notice about renew lease of WAN  IP.  Both my systems are using Starlink for ISP. One system with Starlink modem in Bridge mode gets public WAN IP renewed under 3 minutes!  Another system with S|tarlink modem in loop renews 192.168.1.X every 30 minutes.  I disabled recording the event tracking. (Un fixed)

 

Borje_Lerum wrote

I use the ER605 to connect to my internet provider Telia via fiber and Dynamic IP. My log is alwas full (999+) as the router updates WAN IP every 10 minute!

 

"WAN: DHCP client lease expired. Began renewing the lease."

 

My internet provider says I have the same IP all the time and there must be something in my router. As I understand the WAN IP lease time is nothing I can do about on my (ER605) side, or?

 

 

@Borje_Lerum 

DHCP renew time is the half of the time of the lease. So, if you see this repeated, you can disable the log.

Renew happens when the half of the lease time is reached. It is normal and expected.

How Does DHCP Work? Common Questions and Solutions

Best Regards! If you are new to the forum, please read: Howto - A Guide to Use Forum Effectively. Read Before You Post. Look for a model? Search your model NOW Official and Beta firmware. NEW features! Subscribe for the latest update! ☛Download Beta Here☚ ☛ ★ Configuration Guide ★ ☚ ☛ ★ Knowledge Base ★ ☚ ☛ ★ Troubleshooting ★ ☚ ● Be kind and nice. ● Stay on the topic. ● Post details. ● Search first. ● Please don't take it for granted. ● No email confidentiality should be violated. ● S/N, MAC, and your true public IP should be mosaiced.
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